Method of and apparatus for workpiece loading and unloading in lathe
CA 2190328 C · Owner: Ntn Corporation · Inventors: Ogawa, Masashi; Tanio, Masayuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a lathe of a type employing a movable main spindle the main spindle (2) is moved in a leftward and rightward direction (Y-axis direction) perpendicular to the longitudinal axis of the main spindle (2) after a workpiece (W) has been machined and during the movement of the main spindle (2) the machined workpiece (W) is unloaded from the main spindle (2). At a position to which the main spindle (2) has further been moved another workpiece (W) to be subsequently machined is loaded on. the main spindle (2). The unloading of the machined workpiece (W) is carried out by a method in which the machined workpiece (W) is ejected by a workpiece eject means (7) built in a chuck (2a) in the main …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed November 14, 1996 and granted July 30, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 14, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 14, 2018.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.